Study On Key Technology Of The Sulfur Dioxide Analyzer In Atmospheric Pollution Sources

With the development of chinese economic, the problem of environmentalpollution has arosen people' s more and more attention, atmosphericpollution is one of the pollution which have the largest impact on human. Inorder to control the atmospheric pollution with different measuresaccording to the pollution levels, the first thing we should do ispredominating the parameteres of various atmospheric pollutionssource. However, the investigation found the atmospheric pollution sourcemonitoring system is basically imported from abroad, these systems are notonly expensive, but also the maintenance costs are high. Thus, we developeda project named"Development of the Atmospheric Pollution Source's On-lineDetection Instrument System", aimed at domestic producing the atmosphericpollution source monitoring system with independent intellectualproperty, it is of great significance to develop chinese environmentaltechnology industry and improve chinese research level on environment,"Atmospheric Pollution Source Analyzer for Sulfur Dioxide" is a part ofthe project.This paper analyses the technical problems which will happen when wemonitor the atmospheric pollution source by Sulfur Dioxide Analyzer forAtmospheric, the aim is to directly use the research results "Model DJ3-2Ultra Violet Fluorescence Sulfur Dioxide Analyzer" when we want to monitorthe atmospheric pollution source.In this paper, the primary contents and achievement show as follow:1).Analyse the application problem when the Model DJ3-2 Ultra VioletFluorescence Sulfur Dioxide Analyzer is used in the atmospherepollution source monitoring system: the analyzer' s sensitivity isvery good, but its measuring range limit is lower than the concentrationof Sulfur Dioxide in atmosphere pollution source, so, the gas frompollution sources need to be diluted by proportion first, and then introduced to the gas analyzer for analysis; because of the structuralrestriction, the analyzer can not provide the real-time backgroundsignal, so, we raise the single chamber structure to the dual chamberstructure.2).Develop the atmospheric pollution source' s dilution and samplingsystems: this part is the core component of Concentration DetectionSystem of Sulfur Dioxide in Atmospheric Pollution Source, includingthe research of proportional dilution theory, experiment' s prove anddesign the entire system.3).Put forward two proportional dilution method: regulate the pressureand change the aperture; Research the dilution ratio' s change whenthe temperature of the system changes, put forward the project tomaintain the temperature by heating and research the method to keepconstant temperature; Study the pressure, humidity and other factors'impact on the dilution ratio and put forward the solutions.4).Research the stability of zinc lights' power supply and redesign ofthe power:there are several problems in the power parameters, so thelight' work situation is instability and we redefine the parametersof power by experiment.5).Dual chamber system' s optimization design and research the dataacquisition program: By simulate the dual chamber system with singlePMT by LabView, we determine to adopt the dual chamber system withdouble PMT.